It doesn't matter if your guitar is "in tune" because you could NEVER BE "in tune" dropped THAT ****ing low! Rather than explain to you how a guitar's intonation works, and why you have to compensate for the length in the first place--TRUST me when I tell you that, even the BEST systems designed to compensate more than a stock instrument, STILL have issues!

This tuning would be ideally suited for a baritone guitar, because the larger scale makes compensation possible.

HOWEVER, the reason it sounds like shit is the same reason you don't play open chords on a Bass! The problem, is that low frequencies are muddy as hell, because the lower the note, the closer the frequencies are together, so even perfect sine waves would be near impossible to distinguish the actual pitches, BUT it's EVEN WORSE when you have soo many harmonics/overtones from a guitar string, that it gets to be a lovely soup of sub bass, bass and low-mid frequencies!

What you SHOULD do, is transpose this higher, so that the notes will actually cut thru a mix (unless you like playing alone all the time) THEN you can arrange to have the bass, or a piano double up the part, to fatten up the sound, without taking up the space for your guitar. If you don't believe me, try it and see--I guarantee it'll sound better, since it'll be the exact same notes without the flab.